Finding the Fourth Proportional to 13,590,040.20, 18,754,242.84 and 7,478,468.70
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Solution
The fourth proportional to 13,590,040.20, 18,754,242.84 and 7,478,468.70 is: 10,320,279.85
Step by Step Solution
- Step 1: Write the proportion equation
13,590,040.20 : 18,754,242.84 = 7,478,468.70 : x - Step 2: Convert to fraction form
13,590,040.20/18,754,242.84 = 7,478,468.70/x - Step 3: Cross multiply
13,590,040.20x = 18,754,242.84 × 7,478,468.70 - Step 4: Simplify right side
13,590,040.20x = 140,253,018,071,139.11 - Step 5: Solve for x
x = 140,253,018,071,139.11/13,590,040.20 - Step 6: Final answer
x = 10,320,279.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.